Fire-ladder



(No Model.)

J. L. POINSETT.

FIRE-LADDER.

Patented Dec. 21

NIT-ED STATES PATENT FFICE.

JOSEPH L. POINSETT, OF NEWPORT, KENTUCKY, ASSIGNOR OF ONE-HALF TO HORTON& OO.,'OF CINCINNATI, OHIO.

FIRE-LADDER.

EPECIPICATION forming part of Letters Patent No. 354,839, dated December21, 1886.

Application filed February 15, 1886. Serial No. 192,026. (No model.)

To aZZ whom it may concern:

Be it known that I, J OSEPH L. POINSETT, a resident of Newport, in thecounty of Campbell and State of Kentucky, have invented certain new anduseful Improvements in Fire-Ladders,

of whichthe following is a specification.

My invention relates to improvements for elevating, lowering, andsustaining in position he ordinary escape or fire ladder in a better 1dmore secure manner than heretofore down. These objects and advantagesare at- .tined by the mechanism illustrated in the accompanyingdrawings, in which 'Figure 1 is a longitudinal vertical section. Fig. 2is a plan view of the ladder in a horizontal position. Fig. 3 is aperspectivevview of the sector-wheel and its braces.

A represents the truck or frame upon which the ladder is mounted; B, astationary disk or ring secured thereto, beveled on its outer edge so asto seat within a ring, M, inversely beveled on its inner edge, over bothof which is a ring, 0, secured to the ring M by bolts, forming aturntable around the ring B, the beveled 2 edge of which retains thetable in its position. This turn-table, however, may be made. in anywell-known manner.

To the upper side of the turn-table are secured journal-boxes D D,forming bearings for 0 the shaft E, whichis provided with a screw orworm, N, and a crank, K. r

F represents a ladder, which may be composed of any number of sectionsfolded and extended in any convenient manner.

G is a sector-wheel, securely attached to the lower end of the ladder bybrace-arms H I J, and mounted on a shaft, 1?, journaled in bracketbearings or standards R R S, rising from each side of the revolving diskor turn- 0 table 0. The sector-wheel should be sufficiently great toallow the ladder to be inclined in either direction from theperpendicular, so that when in use its upper end can be removed fromdanger. 5

It is obvious that the ladder by this mechanism can be raised or loweredat will by simply turning the crank K in one direction or another.

Having described my invention ,wh'at I claim 1s 1. The combinationof thetruck-frame A, the turn-table mounted thereon and provided on its upperside with attached journal-boxes D, the horizontal shaft E, journaled'in'said boxes and having at its center an attached worm-wheel, N, thestandards R S,rising from the turntable, the transverse shaft B, mountedin the standards, the sector gear-wheel G, carrying the ladder andmounted on the transverse shaft and engaging the worm-Wheel,substantially as described.

2. The combination of the truck-frame A, the ring B thereon, thetnrntable O, rotating on the ring and provided at opposite sides withattached journal-boxes D, the horizontal shaft E, journaled in saidboxes and having an attached wormwheel, N, the standards secured toopposite sides of the turn-table, the transverse shaft P, mounted in thestandards, the sector gear-wheel G, comprising the bracearms HI J andmounted on the transverse shaft, and the latter connected with thebracearms, substantially as shown and described.

In testimony whereof I have hereunto set my hand.

J. D. POINSETT.

Witnesses:

ROBERT ZAHNER, EDWARD BOYD.

Countersigned i It is hereby certified that Letters Patent No. 354,839,granted December 21, 1886, upon the application of Joseph L. Poinsett,of Newport, in Fire Ladders,

should have been issued to Joseph L. Poinsett, and

Kentucky, for an improvement was erroneously issued to said Poinset-t;that said Letters Patent Horton d2; 00., of Cincinnati, Ohio, saidHorton & 00. being assignees of one-half interest; and that the saidLetters record of the case in the Patent Office.

Signed, eountersigned, and sealed this 28th day of December, A. D. 1886.

[SEAL] D. L. HAWKINS,

Acting Secretary of the Interior.

M. V. MONTGOMERY,

Commissioner of Patents.

